Kia Optima 2019–2020 — technical service bulletin
Bulletin SC367_OWNR · NHTSA communication 11037394 · issued Sep 11, 2026
Technical service bulletin
communication type
Engine
component
2019–2020
model years
2
vehicle entries
Official summary
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC367) - This document is the owner notification advising that Kia is conducting an important Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations for 2019-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T-GDI engine.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.